By William P. Wood. "A chilling true excursion into the dark heart of a female serial killer" -- specifically Dorothea Montalvo Puente. This is not the only book about Puente, but the cover photo appears to be the only one publishers ever think to use.
This PB iteration of the story is seen less often, and this particular tome is in okay shape -- cracked/cocked spine, sticker ghosts, edgewear, mild page toning, but good enough to read.